CY25100SXC-055

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY25100SXC-055 is a field and factory programmable spread spectrum clock generator designed for EMI reduction. It operates on a single 3.3 V supply within the commercial temperature range of 0 °C to 70 °C. The device synthesizes output frequencies from 3 MHz to 200 MHz using an integrated PLL, accepting input clocks or crystals between 8 MHz and 166 MHz. It features programmable center spread (±0.25% to ±2.5%) and down spread (-0.5% to -5.0%) with a nominal modulation frequency of 31.5 kHz. The component includes internal load capacitor tuning arrays ranging from 12 pF to 60 pF, eliminating external crystal capacitors. It provides two outputs: a non-spread REFCLK and a modulated SSCLK.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates a proprietary Phase-Locked Loop and Spread Spectrum Clock technology to synthesize and modulate input clock frequencies, significantly reducing radiated electromagnetic interference energy at fundamental and harmonic frequencies.
• Features programmable configuration memory allowing customization of output frequency, spread percentage, crystal load capacitance, reference clock enablement, and power-down or output-enable functions without requiring external components.
• Includes internal programmable load capacitor tuning arrays that match specific crystal load requirements, removing the need for discrete external capacitors on the XIN and XOUT pins.

Clock Generators, PLLs, Frequency Synthesizers Applications

• High-speed digital electronic systems requiring compliance with regulatory EMC standards
• LCD driver ICs utilizing spread spectrum techniques to minimize noise
• Embedded processors and controllers needing low-cost clock synthesis solutions

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the ordering code suffix against the manufacturer's documentation to confirm the specific package type and temperature rating. Ensure the part number matches the required programming flow, distinguishing between field-programmable and factory-programmed variants. Confirm availability through authorized distributors as inventory levels fluctuate.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when designing systems that require flexible clock generation with built-in EMI mitigation capabilities. Consider the operating voltage constraints and ensure the input source aligns with the supported crystal or reference clock ranges. Evaluate the thermal resistance characteristics if high-frequency operation is anticipated.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the CY25100 family of spread spectrum clock generators manufactured by Cypress Semiconductor Corporation. The family supports both field and factory programmability, offering versatility for prototyping and high-volume production. It utilizes CMOS technology to provide low-power dissipation and jitter performance suitable for modern digital applications.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other CY25100 variants such as CY25100SXCF or CY25100ZXIF, depending on the required package and temperature range. Verify pin compatibility and electrical specifications before substitution.